RAD21 and metastatic malignant neoplasm in the lymph nodes: Ninety-five patients with epithelial ovarian cancer were followed up until April 30, 2019, and the Kaplan–Meier survival analysis results showed that the overall survival of patients with high RAD21 expression, FIGO III–IV, and lymph node metastasis was shorter than that of patients with low RAD21 expression, FIGO I–II, and no lymph node metastasis (Figure 1D).